diff options
| author | Thierry Reding <treding@nvidia.com> | 2015-12-03 13:02:52 +0100 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2019-10-28 11:18:44 +0100 |
| commit | 480770440ad1681e5100e9719fc5f9bb8bc46ca8 (patch) | |
| tree | 8f9a3cc66a525a3acbb5462472772dd5287596bb /drivers/gpu/drm/tegra | |
| parent | 27ba465ce3397c4705f87c1f73e6d67c1b48ef0f (diff) | |
drm/tegra: dp: Probe link using existing parsing helpers
Use existing parsing helpers to probe a DisplayPort link.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/gpu/drm/tegra')
| -rw-r--r-- | drivers/gpu/drm/tegra/dp.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/gpu/drm/tegra/dp.c b/drivers/gpu/drm/tegra/dp.c index e7602fc39a4a..f9234f66062d 100644 --- a/drivers/gpu/drm/tegra/dp.c +++ b/drivers/gpu/drm/tegra/dp.c @@ -47,21 +47,20 @@ static void drm_dp_link_reset(struct drm_dp_link *link) */ int drm_dp_link_probe(struct drm_dp_aux *aux, struct drm_dp_link *link) { - u8 values[3]; + u8 dpcd[DP_RECEIVER_CAP_SIZE]; int err; drm_dp_link_reset(link); - err = drm_dp_dpcd_read(aux, DP_DPCD_REV, values, sizeof(values)); + err = drm_dp_dpcd_read(aux, DP_DPCD_REV, dpcd, sizeof(dpcd)); if (err < 0) return err; - link->revision = values[0]; - link->max_rate = drm_dp_bw_code_to_link_rate(values[1]); - link->max_lanes = values[2] & DP_MAX_LANE_COUNT_MASK; + link->revision = dpcd[DP_DPCD_REV]; + link->max_rate = drm_dp_max_link_rate(dpcd); + link->max_lanes = drm_dp_max_lane_count(dpcd); - if (values[2] & DP_ENHANCED_FRAME_CAP) - link->caps.enhanced_framing = true; + link->caps.enhanced_framing = drm_dp_enhanced_frame_cap(dpcd); link->rate = link->max_rate; link->lanes = link->max_lanes; |